Abigail Joy Dougherty: Registered Dietitian, Nutrition Expert & Lover of Life
2014, gluten free, Healthy Eating, Inspiration, Recipes, spaghetti squash, Vegetarian

Cheesy Spaghetti Squash and Veggie Casserole

Happy Monday!

Grateful for Everything

What are you grateful for today? Everything?!?

I am so so soo excited to share this cheesy, flavorful, delicious and most importantly, healthy meal with you! It’s packed with veggies, is gluten free and can very simply be made vegetarian – perfect for #meatlessmonday. My husband and I tried it for the first time tonight and WOW, this will go on my “make all the time” list! Yumity-yum-yum- YUM!

I love this dish because it is simple and once all the veggies are chopped, it is a one dish meal! My favorite type of recipe – one and done! 🙂

Enjoy!! 🙂

Cheesy Veggie and Spaghetti Squash Casserole

Serves 6-8Cheesy Spaghetti Squash and Veggie Casserole


  • Cooking spray or oil mister
  • 1 tbsp. olive oil
  • 1 medium onion, chopped
  • 1 large zucchini, halved lengthwise and thinly sliced
  • 1 medium green pepper, sliced and chopped
  • 8 oz. button or baby bella mushrooms, sliced
  • 1 spaghetti squash, steamed and prepared (see how: here)
  • 1 large jar marinara sauce (about 24 ounces)
  • 1-15 oz. container of part skim ricotta cheese
  • 1/2 c. reduced-fat Italian blend cheese (or mozzarella)
  • 1 package (4 links) Al Fresco Chicken Sausage, sliced in half and chopped (I used Spinach and Sun Dried Tomato)
  • 1 tablespoon chopped parsley (optional)


  1. Preheat oven to 350 degrees. Spray a 9 x 13 baking dish with cooking spray or oil mister.
  2. Heat olive oil in a large skillet over medium heat. Add onion and pepper and cook until softened, about 4 minutes. Add zucchini and mushrooms and cook until softened and liquid has boiled off, about 7 minutes more. Remove from heat.
  3. Add spaghetti squash and , marinara sauce, 3/4  of ricotta to skillet with vegetables. Stir until well combined.
  4. Pour squash mixture into baking dish. Throw dollops of ricotta on top of the casserole and top with cheese. Bake for 30 minutes. Sprinkle with parsley before serving, if desired.


2 Comments to “Cheesy Spaghetti Squash and Veggie Casserole”

  1. YUM!! Can’t wait to make it!

Leave a Reply